Embroidery hoops or mounts. a 4mm bolt and nut should fit in all.
Probably easier to trace the outline on your fabric, use a larger hoop to embroider, and frame in the leaf hoop.
If printed with no fill, only good for frame/mount.
one file has just the largest size, the second file has four graduated sizes that can print all at once.
leaf_hoop.stl | 36.0KB | |
leaf_hoops_4_sizes.stl | 148.6KB |